Heat-producing compound.



a. Drawing.

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To all whom it may concern:

Be it known thatI, WILLIAM F. McNAnB,

' a resident of Pittsburgh, in the county of Allegheny :and State of Pennsylvania, have invented a new and. useful Improvement in Heat-Producing Compounds, of which the following is a specification. 1 This invention relates to heat producing compounds or mixtures, and particlarly for use in cleaning drainage or sewer pipes or conduits, closet bowls or basins, for remov- 'ing residual obstructions from oil 'or gas wells, for attacking oils or greases, as a source of heat for food products, or as a disinfecto'r or deodorizer.

. The object of-the invention is to provide a compound or mixture of the kind described which can be manufactured at low cost, which is'-stable under normal conditions, which produces heat without flame when mixed with water, and also produces no malodorous, combustible or explosive gases and may therefore be safely used under any conditions, and which also has a strong solvent effect so that it will quickly remove obstructions from pipes or conduits.

The invention'comprises the compound or mixture hereinafter described and claimed.

" The composition and proportions of-tlie various substances in the compound may be varied within-certain limits In its simsodium hydrate and potassium fiersulfate' plest form it'consists of a combination. of an alkaline substance, such as sodium or potassium "hydrate, in solid form, combined with one or'mo're oxidizingagents, such, for

example, as oxalic acid or a persulf acid and persulfate probably act as oxidizing agents, especially in the presence of the hydrate, to consume portions of the obstructing material. v In the preferred form of the mixture are used, although ofcourse it isto be understood that potassium hydrate andpersulfate of either sodiumpr ammonium are also suitable.

(his results has the following formula Sodium hydroxid -5 15 grams. Oxalic acid crystals 5 Potassium persulfate (K S O 4 5'grams.

The compound is used by mim'ngit with a uantity-of water, say, 1

ate, or 7 both.- The-alkaline substance in solid form mixture which has given, satisfactory I Specification of Letters Eatent. Patnfim'fll' i915, Application flied October 23, 1am.- ammsam,

being then cured into the- '1 j or'icod from which 'it is desired pm I to remove, an obstruction. .The composition described isfound to generate a temperature of about 225 F.,. and the solution is active for 1 about three minutes. This solution dissolves bristles hair, paper, ra and leather, leavmg no sohd residue an producing'no gases of any kind. If desired, a more violent and effective actioncan' be secured by=adding to the mixture a f uantity of metallic aluminum, preferably in some finely divided form, such as shavings or the granulated metal. This aluminum combines with the hydrate to form an aluminate, giving ofi hydrogen,

which the nascent form is taken up by the oxidizing agents present, so that no free inflammable or explosive gas is produced when the composition is added to water. The proportionof aluminum may vary, but in the composition above described about a gram of the metal is used. A mixture of this kind generates a-temperature of about nitrates, of which potassium nitrate is a fair.

250 -F., and isactive for a considerable example, or' tartaric acid, and like substances. If potassium nitrate is used% gram injeither of themixtures above referred to is foundto improve the results, while 3 grams of tartaric acid factory results.

The mixture attacks and: dissolves. almost all forms of solid matter such as are commonly found in drainage and sewer pipes,

or'residual obstructions in oil andigas wells.

It does not attack porcelain, lead, steel, iron,

brass, or enamel ware and can be safely be put up in packages of convenient form the proper proportions ready to be added to .the proper quantity of water. "It can be ,a'ges containing any desired quantity, and

preferablyis put up in sealed form, for ex.- ample, in an air-tight tin can, so that the substances will not deteriorate. It can be Iused in various ways and for various purposes. One mportant use is for producing produces very satishandled under almost all conditions. It can with all the necessary substances mixed in I be placed in a separate receptacle and water added thereto, and the receptacle containing the food products placed in the solution. This arrangement is particularly suitsolid disinfectors are suitable.

able for soldiers rations or for camp use, as it provides a convenient package of food and the essentials for heating the same. Thecompound or mixture may also be used in disinfecting or deodorizing. forms above described it of course is a disinfector in that the heat produced is itself sufficient to destroyv many different kinds of germs. However, to increase the disinfecting efliciency a suitable quantity of disinfecting material may be added to the compound. Preferably, some material which has a solid form ysuch as bichlorid of mercury. 3/10 of a gram of thismaterial in the mixture as above described is found to produce satisfactory results, although any suitable amount may be used and other Also, any

- substance which produces a pleasing odor may be added to the compound if desired. Preferably, substances will be used having a solid form and which give ofl a pleasing odor when dissolved in water, or the like. Such substances, for example, are vanillin, musk, or camphor products.

What I claim is 1. A heat producing compound or mix ture, containing a solid hydrate, a persulfate, and "oxalic acid.

2. A heat producing compound or mixture, containing sodium hydrate, a persulfate, and oxalic acid.

3. A heat producing compound or mixture, containing sodium hydrate, potassium persulfate, and oxalic acid.

34:. A heat producing compound or mix- -ture,- containing substantially three parts sodium hydrate and one part each of potassium persulfatev and oxalic acid.

5. A heat producing compound or mixture, containing a solid hydrate, a persulfate, oxalic acid, and aluminum.

6. A heat producing compound or mixture, containing sodium hydrate, a" persulfate, oxalic acid, and aluminum.

7. A heat producing compound or mix- In the I tartaric acid.

persulfate, potassium nitrate,

9. A heat producing compound or mixture, containing sodium hydrate, a persulfate, a nitrate, and oxalic acid.

10. A heat( producing .compound or mixture, containing sodium hydrate, potassium persulfate, potassium nitrate, and oxalic acid. v

11.- A heat producing compound or mixture, containing a hydrate, a persulfate, a nitrate, oxalic acid, and aluminum.

12; A heat producing compound or mixture, containing sodium hydrate, a persulfate, a nitrate, oxalic acid, and aluminum.

13. A heat producing compound or mixture, containing sodium hydrate, pdtassium persulfate, potassium nitrate, oxalic acid,

and alumlnum.

14:. A heat. producing compound or mixture, containing a hydrate, a persulfate, a nitrate, oxalic acid, and tartaric acid.

15. A heat producing compound or mixture, containing sodium hydrate, a persulfate, a nitrate, oxalic acid, and tartaric acid.

16. A h'at producing compound or mixture, containing sodium hydrate, potassium persulfate, potassium nitrate, oxalic acid, and tartaric acid;

17. A heat producing compound or mixture, containing a hydrate, apersulfate, a nitgate, oxalic acid, aluminum, and tartaric aci I 18. A heat producing compound or mixture, containing SOdilllIl hydrate, a persulfate, a nitrate, oxalic acid, aluminum, and

'19. A heat producing compound or mixture, containing sodiumhydrate, potassium oxalic acid, aluminum, and tartaric acid.

20. A heat producing compound or mixture, containing substances in substantially the proportions:

Sodium hydrate 15 grams.

5 grams. '3 grams.

In testimony whereof, I have hereunto set my hand. 1

- WILLIAM F. MoNABB.

Witnesses:

ELBERT L. HYDE, GLENN H. LERESCHE.

5 grams. 

